Thread: 305 header size ???
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Old 02-20-2020, 06:13 PM   #5
71novastocker
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Default Re: 305 header size ???
Quote:
Originally Posted by dragracer502 View Post
Found power on the dyno going down from 1 &3/4 to 1 & 5/8
Just straight 1 5/8" or with a step.
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